package com.hspedu.homework;

import java.util.Comparator;
import java.util.TreeSet;

/**
 * @author DL5O
 * @version 1.0
 */
public class Homework04 {
    public static void main(String[] args) {
        TreeSet treeSet = new TreeSet();
        treeSet.add(new Person());
        System.out.println(treeSet);
    }
}

class Person implements Comparable {
    private String name;


    @Override
    public int compareTo(Object o) {
        return 0;
    }
}